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导弹质量特性测量装置设计 被引量:25
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作者 吴斌 张波 许苏海 《上海航天》 2001年第3期41-44,共4页
设计了一种导弹质量、质心、转动惯量一体化测量设备 ,可在同一台设备上完成导弹质量、轴向和径向质心、俯仰、偏航方向的转动惯量测量。该装置主要由测试平台、活动支架、沿导弹纵轴滑动的精确定位机构、三个测力传感器和一个倒扭摆机... 设计了一种导弹质量、质心、转动惯量一体化测量设备 ,可在同一台设备上完成导弹质量、轴向和径向质心、俯仰、偏航方向的转动惯量测量。该装置主要由测试平台、活动支架、沿导弹纵轴滑动的精确定位机构、三个测力传感器和一个倒扭摆机构组成。描述了该装置质量特性测量方法 ,定量分析了测量误差 ,并总结了此类装置设计的几个关键问题。 展开更多
关键词 质量特性 质量 质心 转动惯量 导弹 测量方法 测量装置设计
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基于DSP的电力系统谐波测量装置设计 被引量:1
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作者 张旭 《科技与创新》 2015年第6期116-117,共2页
要想保证监测电力系统谐波的准确性,就要先掌握电网中谐波的存在情况,进而研发一些能够满足测量需求、具有实用性的电力参数监测设备。从基于DSP的电力系统谐波测量装置在我国的发展情况入手,详细分析了该装置设计过程中存在的难点,进... 要想保证监测电力系统谐波的准确性,就要先掌握电网中谐波的存在情况,进而研发一些能够满足测量需求、具有实用性的电力参数监测设备。从基于DSP的电力系统谐波测量装置在我国的发展情况入手,详细分析了该装置设计过程中存在的难点,进而优化设计流程。 展开更多
关键词 DSP 电力系统 谐波测量 测量装置设计
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升船机平衡重钢丝绳测量与调整装置设计 被引量:1
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作者 余松 《黑龙江交通科技》 2021年第1期223-224,共2页
在升船机的系统组成中,最重要的结构就是钢丝绳,但是在具体的应用过程中,钢丝绳会出现长度和受力不均匀的情况,进而使得钢丝绳不能正常的工作。因此,就需要对升船机中钢丝绳及时的进行测量并调整,进而使得钢丝绳能够正常的工作。文中对... 在升船机的系统组成中,最重要的结构就是钢丝绳,但是在具体的应用过程中,钢丝绳会出现长度和受力不均匀的情况,进而使得钢丝绳不能正常的工作。因此,就需要对升船机中钢丝绳及时的进行测量并调整,进而使得钢丝绳能够正常的工作。文中对钢丝绳的相关信息进行了分析与研究,并对乌江构皮滩升船机的钢丝绳进行具体的调整装置进行了对应的设计,最终促进了对钢丝绳的测量与调整。 展开更多
关键词 升船机 平衡重钢丝绳 测量与调整装置设计
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气体绝缘开关设备的瞬态外壳电压测量方法研究
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作者 黄知伟 《电工材料》 CAS 2023年第6期60-62,66,共4页
在分析瞬态外壳电压的定义、特征基础上,归纳了研制瞬态外壳电压测量装置的要点。采用阻抗分压器、蓄电池供电系统、屏蔽箱、高性能录波仪设计了一款安全性高、可靠性高的测量装置。结果表明:该装置测量的时间误差、电压幅值误差均在允... 在分析瞬态外壳电压的定义、特征基础上,归纳了研制瞬态外壳电压测量装置的要点。采用阻抗分压器、蓄电池供电系统、屏蔽箱、高性能录波仪设计了一款安全性高、可靠性高的测量装置。结果表明:该装置测量的时间误差、电压幅值误差均在允许范围内。 展开更多
关键词 气体绝缘开关设备 瞬态外壳电压 测量装置设计
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Experimental study of water effects on gas desorption during highpressure water injection
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作者 ZHANG Guo-hua LIU Xian-xin BI Ye-wu PU Wen-long 《Journal of Coal Science & Engineering(China)》 2011年第4期408-413,共6页
For the question of applying high-pressure water injection to increase gas extraction efficiency by increasing the permeability of water to drive gas action, an independently designed gas desorption experimental measu... For the question of applying high-pressure water injection to increase gas extraction efficiency by increasing the permeability of water to drive gas action, an independently designed gas desorption experimental measuring device was used under the condition of external solution invasion. The law of water effect on gas desorption was obtained after water invasion through experiment for the first time. The results show that water's later invasion not only can make the quantity of gas dcsorp- tion greatly reduced, but also can make gas desorption end early. Therefore, when evaluating the applications of high-pressure water injection to increase gas extraction efficiency, we should take water damaging effects on gas desorption into account. 展开更多
关键词 gas desorption gas extraction high pressure water injection later invasion
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Analysis of the Impact of the Cage Type on the Frictional Moment Ball Bearings
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作者 Lukasz Gorycki 《Journal of Mechanics Engineering and Automation》 2015年第8期450-453,共4页
The paper presents the methodology and results of measurement designed to determine the effect of the rolling element separator (cage) at the frictional moment in ball bearings, The measurement was carried out on fo... The paper presents the methodology and results of measurement designed to determine the effect of the rolling element separator (cage) at the frictional moment in ball bearings, The measurement was carried out on four groups on bearing with different cages. Measurements were carried out on torque-meter STPM, a device that has been designed and manufactured at Kielce University of Technology. The measurement results showed that the type of cage used in ball bearings has a significant impact on the frictional moment. In addition, the results also confirm that the size of the curvature ratio and the accuracy of the races shape have a significant impact on the frictional moment. 展开更多
关键词 Rolling bearing bearing test resistive torque cage.
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Numerical Noise Prediction in Fluid Machinery 被引量:3
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作者 Iris PANTLE Franco MAGAGNATO Martin GABI 《Journal of Thermal Science》 SCIE EI CAS CSCD 2005年第3期230-235,248,共7页
Numerical methods successively became important in the design and optimization of fluid machinery. However, as noise emission is considered, one can hardly find standardized prediction methods combining flow and acous... Numerical methods successively became important in the design and optimization of fluid machinery. However, as noise emission is considered, one can hardly find standardized prediction methods combining flow and acoustical optimization. Several numerical field methods for sound calculations have been developed. Due to the complexity of the considered flow, approaches must be chosen to avoid exhaustive computing. In this contribution the noise of a simple propeller is investigated. The configurations of the calculations comply with an existing experimental setup chosen for evaluation. The used in-house CFD solver SPARC contains an acoustic module based on Ffowcs Williams-Hawkings Acoustic Analogy. From the flow results of the time dependent Large Eddy Simulation the time dependent acoustic sources are extracted and given to the acoustic module where relevant sound pressure levels are calculated. The difficulties, which arise while proceeding from open to closed rotors and from gas to liquid are discussed. 展开更多
关键词 numerical noise prediction fluid machinery computational aero-acoustics large eddy simulation
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